Node.js 與多方服務串接實務(Server Connect To API3rd Service Pattern) by Caesar Chi@clonncd

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Node.js 與多方服務串接實務(Server Connect To API3rd Service Pattern) by Caesar Chi@clonncd

发布者 nodejser

发布于 1447722496917 浏览 4010 关键词 node.js, English

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第1页

Node.js

Server Connect To API / 3rd Service Pattern

Monday, June 23, 14

Caesar Chi @clonncd

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Monday, June 23, 14

@clonncd

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Monday, June 23, 14

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https://github.com/nodejs-tw/nodejs-wiki-book

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Structure Clients

Server

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That means we thought done with something in Node.js But actually we did nothing special.

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Request of

As a Front end Server

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Structure front Server

send Request

Services

secret

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information

cache

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When Node.js has Request

WWW are APIs

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Structure front Server

send Request

Services

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... ...

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But When Service requirement

Grows Up

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Structure front Server

send Request

Too Much Code To Handle

Internal server

... ...

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Service Deﬁnition

• Front server can be ﬂexible to connect • Support Restful API for internal connect • Same Router rule for client • Modules install / uninstall be easy • Light way feedback data

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Server Deﬁnenation

Tips

• •

FSurSopnpetofresretvarRviteceusretfcruaelnaAsbPaeI safﬂoeraxmiinbtaloeeprtndopaulcscolonennn,eecctt

• hStatmpse://Rgiothuutebr.croumle/cfolorncnl/iemnotdule-loader • Modules install / uninstall be easy • Light way feedback data

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app1 app2

app3

app4

Routers as apps, auto route

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app1 app2

app3

app4

Every developers can handle by themselves

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Make connect easy, A tiny distribution server

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Face Response Issue ...

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Wait ...Wait ...Wait ...

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https://www.ﬂickr.com/photos/tormodspictures/

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http://chinese.engadget.com/2014/06/21/facebook-android-update-africa/

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Let’s refactoring code

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Response back as soon as posible

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Heavy processing or request, put late

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Response as short as posible

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https://www.ﬂickr.com/photos/calliope/

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what can NOT be late

• real time date, have to be light (geo, data) • robust data, we could not avoid (but save in

cached, redis and process them later)

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What can late

• log data writing • data saving (not for real time response) • data caching

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Tips

Response First, Process Later

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Too many callback event in waiting queue

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https://www.ﬂickr.com/photos/peter_curb/14318113011/sizes/c/in/photostream/

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WARNNING, It Cause High CPU Usage

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https://www.ﬂickr.com/photos/peter_curb/14318113011/sizes/c/in/photostream/

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We put process in

Task Queue.

http://learnboost.github.io/kue/

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Save process, prarams in Task Queue

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Set callback event when things done

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Send request to 3rd party library / API / URL

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Feedback to Server or Storage trigger callback event to Server

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How about Client?

How feedback to clients, when task queue process task / jobs done, how could we notify clients?

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Time meet

http://socket.io/

or

Socket

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Client and Server connect via a Tunnel

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With handshake

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Structure Clients

Server push

Server

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Structure Clients

Server push

Server

From single way to double ways

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Structure Clients

JSON

Server push

Server

Ads

Habit

From single way to double ways

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Server push, that means

• Ajax mode changed • Browser can do more things • User request is getting more • Server has to afford more currency • Server has opportunity feedback data

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Let’s integrate with Socket.io / Socket and

Task Queue

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Feedback to Server or Storage

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Return data to User in a few minutes

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Return data to User in a few seconds

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Increase User Experience

Not Make Them Wait

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Cache Layer

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Storage Layer

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Part of access

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Part of heavy access

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Not ﬁnished yet

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http://letsnode.com/example-of-what-node-is-really-good-at

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http://mortarnpistol.com/2011/12/16/big-rigs-over-the-road-racing/

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Rules

• Make events as light as posible • Divide things to tiny • Heavy process throw to another way • Monitor app.js after done • Figure out bottlenecks • Decrease users idle / waiting time as posible

Monday, June 23, 14

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https://www.facebook.com/groups/node.js.tw/ https://www.facebook.com/NodeJS.tw https://github.com/nodejs-tw http://nodejs.tw/ http://2014.jsdc.tw/

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https://github.com/nodejs-tw/nodejs-book-beginner-guide

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Monday, June 23, 14

@clonncd